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Method and system for maintaining persistent unique identifiers for devices in a network

a technology of unique identifiers and network identification, applied in the field of device identification, can solve problems such as complicated situations, and achieve the effect of ensuring network reliability

Inactive Publication Date: 2006-12-07
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013] According to the present invention, by using persistent unique identifiers, controllers can identify the same controller device and use their previous state to refer operations to the same controller device without reconfiguration. This allows for quick fault recovery. Such a method and system provides a unique identifier even if the device architecture does not define an identifier.

Problems solved by technology

However, the UPnP device architecture specification specifies that UDN are based on MAC address and time, and so is not constant over time.
Further, some device architectures do not define an identifier for devices.
The situation becomes more complicated when different device stacks and protocols are mixed in a network and a controller must use mixed devices.

Method used

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  • Method and system for maintaining persistent unique identifiers for devices in a network
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  • Method and system for maintaining persistent unique identifiers for devices in a network

Examples

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Embodiment Construction

[0019] In one embodiment the present invention provides a method and system of automatically maintaining persistent unique identifiers for networked devices that may be removed from the network, and later reintroduced into the network.

[0020]FIG. 1 shows an example functional block diagram of a network 10 (e.g., home network) in which an embodiment of the present invention is implemented. In this example, a hand-held device 100, a remote controller 110, home electronics devices, such as a DVD player 120, a TV 130, and a CD jukebox 140, are connected to the home network 10. The hand-held device 100 and the remote controller 110 are control points (i.e., controllers) with which the home electronics devices (i.e., controlled devices) are controlled.

[0021] The controllers 100 and 110 discover the controlled devices 120, 130 and 140 in the network 10, and retrieve device descriptions from the controlled devices 120, 130 and 140. Using the device descriptions, the controller 100 and 110 ...

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Abstract

A method of maintaining persistent unique identifiers for devices interconnected in a network. Information is obtained from a device and a fingerprint generated from that information. It is then determined if the fingerprint is previously associated with an identifier in the network. If the fingerprint is not previously associated with an identifier in the network, then a new identifier associated with the fingerprint is generated, and the fingerprint and the associated new identifier is stored in a memory, wherein the new identifier forms a persistent unique identifier (PUID) for that device. Otherwise, if the fingerprint is not previously associated with an identifier in the network, then the associated identifier stored in the memory is used as the persistent unique identifier (PUID) for that device.

Description

FIELD OF THE INVENTION [0001] The present invention relates to device identification, and in particular device identification in networks. BACKGROUND OF THE INVENTION [0002] Many device architecture standards for networks use a two device type model: controller devices (i.e., controller) and controlled devices. In this model, controllers act as masters for the controlled devices. Controllers keep track of the state of controlled devices in order to maintain connections and operations to the controlled devices. Within home network environments, controlled devices may be removed from the network for different reasons such as software defects, power failure, user intervention, etc. In such cases, controllers may require use of the same state for the controlled devices to continue the previous operation without interruption, if a controlled device is removed from the home network and later reconnected to the home network. As such, a persistent unique identifier for devices is necessary ...

Claims

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Application Information

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IPC IPC(8): H04L12/28
CPCH04L12/2805H04L2012/2849H04L61/2038H04L29/12254H04L61/5038H04L12/16H04L12/28H04L65/00
Inventor PARK, HOYONGKUMAR, PRAVEENMESSER, ALANZHU, VICTOR
Owner SAMSUNG ELECTRONICS CO LTD